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How does a Dehumidifier work?

What are the internal and external circulation systems of the dehumidifier?

The internal circulation of the dehumidifier is to turn the refrigerant inside into a high-temperature and high-pressure gas through the compressor and discharge it from the high-pressure outlet, and then become a low-temperature and high-pressure gas after being cooled by a condenser. Later it turned into a low-temperature and low-pressure liquid by capillary interception. Finally it evaporates and absorbs heat through the evaporator, and returns to the compressor to become a low-temperature and low-pressure gas, which circulates continuously.

The external circulation of the dehumidifier is to suck moist air from the air inlet through the fan under normal working conditions. The air passes through the evaporator and the condenser in turn. The evaporator adsorbs the moisture in the air on the fins (aluminum foil), turning it into dry air, and then passes through the condenser to take away the heat released by the refrigerant, and finally from the air outlet discharge. Continuously circulate repeatedly, continuously extract the moisture in the air, and make the environment reach a dry state.